Drainpipe plug



Feb. 2o, 1923.

1. M. THOMPSON ET AL.

DRAINPHE PLUG FILE? OCT. 20,1920.

si" ries JOHN M. 'rHor/rrsorcr Ann WILLIAM H. 'rirolvrsorr ornurrnro, New, vomi.

nunrurrrii yrrtref Application filed Gctober 20, 1920. Serial No. 4l8,175.

To all 'whom t may concern Be it known that we, JOIrN M. Trrozur-` SON and WILLIAM H. THoMrsoN, citizens of the United States, residing-at` Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Drainpipe Plugs, of which the following is a specification.

This invention relates to plugs or stoppers for drainpipesorlthe like, and more particularly to plugsor stoppers for drainpipes of the kind which are not provided with screw threads or other means to which 'a plug or stopper may be secured.

Most drainpipeswhich are now used for draining basements or cellars and which connect with sewers, are not provided with plugs7 and consequently, if the waterbacks in the sewer,

the cellar or basement may become flooded. `Sewer gases` and odors also sometimes enter the `cellar or basement throughfthe drainpipes. When it is desired to provide the drainpipewith a plug, 1t is generally necessaryfto remove the upper section of the drainpipe and replace it `by a corresponding seCtOIl 0f Pipe having a threaded upperend,which necessitates breaking through the cellar or basement floor and digging below the floor to remove the section tion.

The objects of this invention y are to provide a plug for drainpipes which can be readily applied to drainpipes of usual con-l does not necessitate any the plug in a. drainp-ipe, or the removal therefrom; also to improve the' construction of devices of this kind in the otherrespects hereinafter specified. yIn the accompanyingk drawings:

f Fig. 1 is a sectional view of a drainpipe 4showing in elevation a plug embodying the invention arranged in operative position in the dralnpipe.

yhet is not of pipe and insert the` new sec- .Fig 2 is a similar' view showing the parte I of the plugin `a position invwhich the gasexpanded.

is a central sectional elevation l.thereof on an enlarged scale showing the 5:3

means used for expanding the gasket of the plug.

. Fig. '4c is a similar sectional elevation" showing the plug in operative position in a pipe. v

Fig.V 5. is a top plan view of the plug showing the wrenches in operative relation GOk ythereto for expanding the gasket.

A represents theusual drainpipewhieh may be arranged 1nv a cellar Vlicor and a 1s 65 `theusual perforated cover therefor.

The drainpipe plug embodying the in-` vention shown in the accompanying draw-y ings includes two gasket-compressing mem-` bers B andv C which are .adjustableA rela-` .70" tively toeacli` other, the upper member B vbein;` internally threaded as `shown at and the lo-wer member C having an upper shank portion c externally. threaded toen-k gage with threads 7). The upper member 75` .B preferably has an enlarged `flange 7J `which, prevents the upper part of the plug from entering into a drainpipe. and the `lower member isfpreferably providedwvith an outwardlyeXt-ending flange c engaging an levpansible gasket D, preferablyr made of rubber or other suitable material. i E represents a spacing member or washer whichis '1 varranger: between the expansible gasket D and the lower end of the upper gasket-compressing member B. When the upper and lower .members B and C arel turnedrelatively to each other the opposite `faces of the gasket will be pressedtoward each other, causing they gasket to expand as shown yin Figs. l and 4. The spacing member or washer E is preferably, though not necessarily used and servesto prevent the lower end of the member B from wearing or rubbing on the gasketl l),` and' also eliminates 95 the friction whichwould result from hav--` ing the lower end of the upper gasket-compressing member bear directly against the gasket. ,l H y The lower gasketfcompressing member C l 2)" of the upper member l?) i5 io` larities or roughness on thewalls oit-the `rthreadedfportionb ofthe member `B. This *placey and .fclosed bythe screw plug H, pref ing apertures enter.l

preferably provided with a centra-l hole which in the construction with a. wrench for turnino` these two mein-- 1n the conbers relatively to each other.

the flange struction shown for this purpose,

a pair of upwardly extending lugs G havjections g of awrench g2 are adapted to v vIn the'coiistruction shown, lone l of the arms or projections of the wrench is ccnsiderably longerthan the othen so that the wrench may easily be removed by iirst removing the short f arm-y `from engagement with the lug and then A`witlidrawing' the longer arm from vits lug. L wrench efany other kind maybe used in `connection with the upper member BQ l l 'i in inserting the device into a draiiipipc,

'the plug lis first placed into the position shown in Fig.v 2, The wrenches F and g2' `are, then, placed into engagement with` the lower and upper gasket-compressing members respectively and the wrench g2 is turned in a direction to cause the 'compressingmem bers to compress the gasket D f to expand the same.' es soon as the gasket engages tlie'wal'ls of the 'pipe the vfriction between the gasket Aand theywalls males itV unnecessary to' hold:v the wrenchF, andthe further expansionf'of the `gasket D may be accom plished by turning thewrench 'g2 only. .By malring the gasket ofsoft rubber or analof gougimaterial, the lgasket will" form a tight joint with'thc pipe ed regardless of irregupipe.

ber Bjforms aLpass/agethrough thedrainpape plug.n through which water may `be drained from the cellar or basement. When desired,'- this passage through the draingipe plug may be closed means of a screw plug or closing vdevice 'H adaptedf to engage lthe plug is preferably'provided with 'a washer or gasketh. When the plug H is in place7 {the/passage through` thedrainpipe plug is closed;Y By removing the screwV plug i n y i watercan be-drained from a cellar or basementwithoutthe necessity of removing the drainpipe plugifrommthe drainpipe. v

Thefdrainpipe .plug described can be easily inserted'iin; a 'drainpipe and' when in ventswwater' frombacking from a sewer through the drainpipe and flooding a cella-r or` :basement:` rk The.` plug also, ,prevents Asewer.

provided; with i `g into iif'lii'ch the arms or proto engage the 'piper the passage through said" tubular members Thecentral hole or'passage '02, together "with'the upper tubular, compressing meingases or 'odors from escaping through the drainpipe. The plug can. be inexpensively made and can be readily placed in operative position in a drainpipc and requires no changes in the drainpipe itself.`

'We claim as v`our iirvention:` l

l. 1n a pipe plug, the combination of a member having a tubular stem and an integr-'al flange on one end thereof, a second tubular 'member into which apart oit the stein of said `first member is 'adapted `to extend, an eiipansible gaslret arrangedl between said flange and said second tubular member, means forv drawing said-parts'toward "each other to compress said gasket between said flange and said second tubular member for causing thelgasket and means for closing 2.111 a drainpi'pe plug, the combination of two relatively movable parts adapted to be inserted into afdrainpipe, one of,l said partshavinga flangewhich Vis of greater diameter than said drainpipe and having a threaded portion engaging with a correspondingly threaded portion of the other part, an" expansible gasket adapted tobe compressed by said vtwo parts to press'said gasket `into engagement with a drainpipe, vsaid other part having a socket adaptedto receive "a wrench and said flange 'having parts adapted to cooperate with another wrench whereby said two parte may be' turned relatively tov each other;

y3.- In adra'inpipe plug, the combination of two tubular members, one of which is eX- ternally threaded and' the'other of which .is

internally threaded,v ain expansible gasket adapted to be compressed by said two meinbers for causingsaid gasketpto engage the ldrair'ipip'e, anda screw plug adaptedto engage with the internally threadediinember for' closingk the passage through said' two tubular members.

il. ln a drainpipe plug the combination of two tubular members, one of which is, ex-

ternally threaded andthe other of which is internally threadech ed `member having anV axialpassage adapted said"A externally threadto receive aj wrench, `an erpansible gaslret adapted lto be compressedby said 'two members for causing` said'gasket to engage the drainpipe, to close said drainpi-pej to the y passage'of liquid except through said tubular members means on said internallythreadedmember withl which .a wrench is adapted to' engage for turning saildlmemb'ers relatively to each' other,l andpmeans engaging with'said internally threaded" member for closing the passage through said members.

5.v Ina-'pipe plug, the combinationiof two tubular kmembers havingL a screw-threaded engagement Iwith each other for `'adjusting said members relatively to eachititiller,one'of said members having a part exending into said other member and provided von said part with means for engaging a Wrench, an expansble gasket adaptedy when compressed 1:0 engage Jche pipe, means connected with seid tubular members for compressing said gasket to expand the same When sald mems l0 day of Octo- 

